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CVE-2026-33521Published

BUG-000186514 - ArcGIS Server has a security vulnerability.

Exact source revision recorded 26 Oct 2026 20:35:31 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-33521

Published

There is s denial of service vulnerability in Esri ArcGIS Server versions 12.0 and prior that may allow a remote, unauthenticated attacker to supply crafted requests that may, under exceptional circumstances, consume all available worker threads and deny service to users. A patch is provided for ArcGIS Server software in General Availability and Extended support status, which includes versions 12.0, 11.5, 11.3, and 11.1. Other versions are in mature or retired status, which are not patch eligible. Users working with unlisted versions are advised to upgrade and apply the patch.

Source published
26 Oct 2026 18:07:20 UTC
Source modified
26 Oct 2026 19:38:29 UTC
Observed here
26 Oct 2026 20:35:31 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 3 Nov 16:33 UTC · 273 of 275 readable · 270 fully read · documentation 469/469 current

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